US4271110A - Method of manufacturing a ceramic unit for indirect heat exchange and a heat exchanger unit obtained thereby - Google Patents

Method of manufacturing a ceramic unit for indirect heat exchange and a heat exchanger unit obtained thereby Download PDF

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Publication number
US4271110A
US4271110A US06/076,103 US7610379A US4271110A US 4271110 A US4271110 A US 4271110A US 7610379 A US7610379 A US 7610379A US 4271110 A US4271110 A US 4271110A
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United States
Prior art keywords
ducts
unit
rows
heat exchanger
orifices
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Expired - Lifetime
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US06/076,103
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English (en)
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Louis Minjolle
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Ceraver SA
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Ceraver SA
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Assigned to SOCIETE ANONYME DITE: CERAVER reassignment SOCIETE ANONYME DITE: CERAVER ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MINJOLLE LOUIS
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F7/00—Elements not covered by group F28F1/00, F28F3/00 or F28F5/00
    • F28F7/02—Blocks traversed by passages for heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits

Definitions

  • the present invention relates to a method of manufacturing a ceramic unit for indirect heat exchange, said method consisting of extruding a raw ceramic material in a parallel duct configuration.
  • the Applicant's published French Patent application No. 2 414 988 described a method of manufacturing a ceramic unit for indirect heat exchange, the method comprising extruding a raw ceramic material in a parallel duct configuration, piercing the ends of at least a first series of the ducts corresponding to one of the indirect heat exchange fluids with inlet and outlet orifices for a fluid to pass through said series of ducts, the axes of the orifices being perpendicular to the common direction of said ducts, and firing the unit to give it the required mechanical strength.
  • the inlet and outlet orifices for one of the fluids are formed by piercing the walls of the ducts at the end of one of the series of ducts.
  • These orifices must be formed not only in the outer walls of the unit, but also in its inner walls which separate adjacent ducts. This gives rise to manufacturing difficulties, since the walls must not be deformed thereby and it is difficult and expensive to form the orifices in the unit after firing. The orifices also cause appreciable loss of head in the finished unit when in use.
  • Preferred embodiments of the invention provide a simple, rapid and inexpensive heat exchanger unit of this type and a method of manufacturing it, in which the heat inlet and outlet openings cause only slight loss of head.
  • the present invention provides a method of manufacturing a ceramic unit for indirect heat exchange.
  • the method comprises an initial step of extruding a raw ceramic material in a parallel duct configuration, followed by two inlet/outlet forming steps of closing every other row of ducts in the plane of at least one of the ends of the extruded unit and of obliquely cutting said rows of ducts prior to the ends being closed to form inlet or outlet orifices which are perpendicular to the common direction of the ducts, and a firing step of firing the unit, the firing step taking place later than the said step of closing the ends of the rows of ducts.
  • it also has at least one of the following characteristics.
  • the ceramic unit is cut obliquely before it is fired.
  • Both ends of the same rows of ducts are cut obliquely.
  • Oblique saw cuts are made symmetrically to a longitudinal plane of symmetry of the unit, these oblique saw cuts forming two bevel-shaped openings.
  • half the rows of ducts are obliquely cut and at the other end of the unit, the other half of the rows of ducts are obliquely cut.
  • the raw ceramic material is extruded in a parallel duct configuration with different cross-sections, the ducts through which hot fluid is to flow having larger cross-sections than those of the ducts through which cold fluid is to flow.
  • the invention also provides a heat exchanger unit manufactured by the above defined method.
  • Heat exchanger units manufactured by the method according to the invention are described by way of example and with reference to the accompanying drawings.
  • FIG. 1 illustrates a heat exchanger unit in which the inlet and outlet flows of one of the fluids are parallel to the general axis of the unit, while the inlet and outlet flows of the other fluid are perpendicular to said axis, via oblique saw cuts in the rows of ducts through which the said other fluid flows.
  • FIG. 2 illustrates on a larger scale the ends of a few of the flow ducts and shows how a row of flow ducts for one of the fluids is blocked before the outlet openings of said ducts are pierced.
  • FIG. 3 illustrates a heat exchanger unit in which one of the fluids is brought in parallel to the axis and removed perpendicularly thereto, while the other fluid is brought in perpendicularly to the axis and removed parallel thereto, the side openings being likewise formed by saw cuts at the ends of the rows of ducts for removal perpendicular to the axis.
  • FIG. 4 illustrates a heat exchanger unit in which one of the fluids is brought in and removed parallel to the axis, while the other fluid is brought in and removed perpendicularly to the axis, on either side of a plane of symmetry, by means of bevel-shaped cuts at the ends of the ducts which correspond to the said fluid.
  • FIG. 5 illustrates a cross-section of a heat exchanger formed by side-by-side nesting of four units similar to that of FIG. 1, but in which the cross-sections of the ducts through which hot fluid flows are greater than those of the ducts through which cold fluid flows.
  • the flow direction of the first fluid which enters and leaves parallel to the axis of the unit is shown by arrows 1.
  • the fluid flows in ducts such as 2 of square cross-section and leaves through end orifices such as 3.
  • the second fluid enters every other row of heat exchanger ducts such as 4 perpendicularly to the duct axes (arrow 5), via orifices 6 which are formed by saw cuts 7, at an acute angle 7A to the plane of the end of the heat exchanger unit.
  • These saw cuts are preferably made in the raw ceramic unit, but can also be made on the pre-fired (biscuit) or fired ceramic heat exchanger unit.
  • the second fluid After flowing in the heat exchanger unit against the flow of the first fluid, the second fluid leaves the heat exchanger unit perpendicularly to the axis (arrow 8) through side orifices 9 formed by saw cuts 10 at the other ends of the same rows of ducts.
  • the flow direction of the first fluid which enters the heat exchanger unit parallel to its axis through the orifices 3 and which flows towards the front of the figure in a first series of rows of ducts, is indicated by the arrows 1.
  • the second fluid enters the heat exchange unit perpendicularly to its axis in the direction of the arrows 5 via the orifices 6 and then flows along the intermediate rows of ducts towards the back of the Figure, in the direction of arrows 11.
  • the rows of ducts in which the second fluid flows are closed by bars such as 12 and 13 (the bar 13 being also shown removed from the heat exchanger unit). These bars are made either by separate manufacture followed by bonding with an enamel or a cement, or, preferably, by dipping the end of the heat exchanger unit in slip, the openings 3 of the other rows of ducts being masked by detachable screens of flexible material, e.g. flexible plastics material. If slip based on the same material as the heat exchanger unit or based on refractory cement is sufficiently viscous, the rows of ducts will be closed effectively and it will only be necessary to fire the slip at a temperature at least equal to the operation temperature.
  • FIG. 3 illustrates a heat exchanger unit in which one of the fluids enters perpendicularly to the axis and leaves parallel thereto, while the second fluid enters parallel to the axis and leaves perpendicularly thereto.
  • the first fluid which flows in the direction of the arrows 1, enters the heat exchanger unit through the front orifices 3 and leaves the heat exchanger unit in the direction of arrow 16 via orifices 14 formed by saw cuts such as 15.
  • the second fluid enters perpendicularly to the axis as shown by the arrows 5, via the side orifices 6 formed by saw cuts such as 7, and then flows in a direction parallel to that of the first fluid and is removed parallel to the axis, in the direction of arrows 17.
  • FIG. 4 illustrates a heat exchanger unit in which one of the fluids enters and leaves the unit parallel to its axis, while the second fluid enters and leaves the unit perpendicular to its axis, on either side ot the horizontal plane of symmetry of the unit.
  • the first fluid flows longitudinally in the direction of the arrows 1 and leaves through the end openings such as 3.
  • the second fluid enters perpendicularly to the axis of symmetry of the heat exchanger unit, firstly in the direction of the arrows 5 through the openings 6, and secondly in the direction of arrows 19 through openings 18.
  • openings are formed by two symmetrical saw cuts 20 and 21 which form a bevel whose edges are symmetrical with respect to the horizontal plane of symmetry of the heat exchanger unit corresponding to partitions such as 21A between ducts.
  • the second fluid leaves in the same way, perpendicularly to the plane of symmetry of the heat exchanger unit, in the direction of arrows 24,25, through openings 22,23 formed by saw cuts which are symmetrical with respect to the horizontal plane of symmetry embodied by the ends 21B of the middle partitions.
  • the heat exchanger with four juxtaposed units illustrated in a cross-section in FIG. 5 is made of four units such as 30 grouped together in a square configuration and including cold fluid flow ducts 31 and hot fluid flow ducts 32, the overall cross-section of the ducts 32 being greater than that of the ducts 31.
  • the four units are surrounded by a ceramic casing 33 made of the same material as the units 30, embedded in thermal insulation material 34 which is itself surrounded by a metal casing 35.
  • the metal casing is clamped on the insulation material at angles 36 by means of nuts and bolts and clamping is limited by springs (the nuts, bolts and springs not being shown). Side orifices, e.g.
  • the heat exchanger itself can include several units such as 30, superposed perpendicularly to the plane of FIG. 5 and assembled by means of intermediate sealing parts.
  • heat exchangers made of a ceramic material and manufactured by the method of the invention are particularly suitable as heat exchangers for turbine engines, in which the material of the heat exchanger must withstand high temperatures of about 1200° C. to 1400° C. They can then be made e.g. of silicon nitride, and also of mullite, cordierite or silicon nitride modified by aluminium and oxygen, of the type called SiAlON. However, they apply also to other industrial operations, e.g. to recovering heat from furnace gases.
US06/076,103 1978-09-22 1979-09-17 Method of manufacturing a ceramic unit for indirect heat exchange and a heat exchanger unit obtained thereby Expired - Lifetime US4271110A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7827187 1978-09-22
FR7827187A FR2436958A2 (fr) 1978-09-22 1978-09-22 Procede de fabrication d'un element d'echange indirect de chaleur en matiere ceramique, et element obtenu par ce procede

Publications (1)

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US4271110A true US4271110A (en) 1981-06-02

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US (1) US4271110A (ja)
JP (1) JPS55102891A (ja)
AU (1) AU531203B2 (ja)
BE (1) BE878683A (ja)
CA (1) CA1118988A (ja)
DE (1) DE2937342A1 (ja)
FR (1) FR2436958A2 (ja)
GB (1) GB2032609B (ja)
IT (1) IT1121038B (ja)
NL (1) NL7907058A (ja)
SE (1) SE7907802L (ja)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4421702A (en) * 1980-03-24 1983-12-20 Ngk Insulators Ltd. Ceramic recuperative heat exchangers and a method for producing the same
US4533584A (en) * 1983-04-05 1985-08-06 Ngk Insulators, Ltd. Multi-channel body
USRE33013E (en) * 1983-04-05 1989-08-08 Ngk Insulators, Ltd. Multi-channel body
US5373634A (en) * 1993-09-14 1994-12-20 Corning Incorporate Method of forming alternating-flow heat exchangers
US5416057A (en) * 1993-09-14 1995-05-16 Corning Incorporated Coated alternating-flow heat exchanges and method of making
DE19653989A1 (de) * 1996-12-21 1998-06-25 Degussa Reaktorkopf für einen monolithischen Gleich- oder Genstromreaktor
US6534028B2 (en) 1996-12-21 2003-03-18 Degussa Ag Process for performing endothermic catalytic reactions
WO2003033985A1 (en) * 2001-10-19 2003-04-24 Norsk Hydro Asa Method and equipement for feeding two gases into and out of a multi-channel monolithic structure
WO2004090451A1 (en) * 2003-04-11 2004-10-21 Norsk Hydro Asa Method and equipment for distribution of two fluids into and out of the channels in a multi-channel monolithic structure and use thereof
EP1479883A1 (de) * 2003-05-10 2004-11-24 Universität Stuttgart Verfahren und Vorrichtung zur Reinigung von Abgasen
US20050056410A1 (en) * 2003-08-20 2005-03-17 Japan Atomic Energy Research Institute Compact heat exchanger made of ceramics having corrosion resistance at high temperature
WO2005085737A1 (de) * 2004-03-05 2005-09-15 Behr Gmbh & Co. Kg Vorrichtung zum austausch von wärme und verfahren zur herstellung einer solchen vorrichtung
US20060080968A1 (en) * 2002-08-30 2006-04-20 Alstom Technology Ltd Method and apparatus for the combustion of a fuel-oxidator mixture
US20070261400A1 (en) * 2004-10-07 2007-11-15 Behr Gmbh & Co. Kg Air-Cooled Exhaust Gas Heat Exchanger, in Particular Exhaust Gas Cooler for Motor Vehicles
US20090031697A1 (en) * 2002-08-30 2009-02-05 Alstom Technology Ltd Apparatus for the combustion of a fuel-oxidizer mix
US20090238751A1 (en) * 2007-11-02 2009-09-24 University Of Connecticut Process Intensification In Microreactors
US20120048524A1 (en) * 2009-03-23 2012-03-01 Kyocera Corporation Ceramic heat exchanger and method of producing same
EP2510288A1 (en) * 2009-12-08 2012-10-17 NY Kraft Sverige AB Heat exchanger with guided air flows
US20130264031A1 (en) * 2012-04-09 2013-10-10 James F. Plourde Heat exchanger with headering system and method for manufacturing same
US20180347431A1 (en) * 2017-06-02 2018-12-06 Toyota Jidosha Kabushiki Kaisha Heat exchanger and waste heat recovery structure
US20190186851A1 (en) * 2010-09-22 2019-06-20 Raytheon Company Heat exchanger with a glass body
US10809007B2 (en) 2017-11-17 2020-10-20 General Electric Company Contoured wall heat exchanger
US20220049904A1 (en) * 2020-08-13 2022-02-17 General Electric Company Heat exchanger having curved fluid passages for a gas turbine engine
US20230201513A1 (en) * 2021-12-27 2023-06-29 Blok Additive Manufacturing B.V. Heat and moisture exchanger

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DE3260216D1 (en) * 1981-01-26 1984-07-19 Comp Generale Electricite Process for the selective sealing of parallel channel ends of ceramic structures, and pasty composition for performing it
FR2519751B1 (fr) * 1982-01-13 1987-10-02 Chausson Usines Sa Echangeur de chaleur pour deux fluides dont l'un peut etre corrosif
DE3435911A1 (de) * 1984-09-29 1986-04-03 Uhde Gmbh, 4600 Dortmund Kreuzstrom-waermeaustauscher
WO1986002718A1 (en) * 1984-11-02 1986-05-09 Mitsubishi Jukogyo Kabushiki Kaisha Crossflow heat exchanger
FR2584733B1 (fr) * 1985-07-12 1987-11-13 Inst Francais Du Petrole Procede ameliore de vapocraquage d'hydrocarbures
AT396176B (de) * 1987-12-11 1993-06-25 Vaillant Gmbh Waermetauscher fuer einen wasserheizer
JPWO2015068783A1 (ja) * 2013-11-06 2017-03-09 イビデン株式会社 熱交換器
JP2015140958A (ja) * 2014-01-28 2015-08-03 イビデン株式会社 熱交換器
JP2015140960A (ja) * 2014-01-28 2015-08-03 イビデン株式会社 熱交換器
JP2015140959A (ja) * 2014-01-28 2015-08-03 イビデン株式会社 熱交換器
JP2015140273A (ja) * 2014-01-28 2015-08-03 イビデン株式会社 ハニカム構造体
JP2015140972A (ja) * 2014-01-29 2015-08-03 イビデン株式会社 熱交換器
JP2016099085A (ja) * 2014-11-25 2016-05-30 イビデン株式会社 熱交換器および熱交換器の製造方法
DE102018125284A1 (de) * 2018-08-15 2020-02-20 Deutsches Zentrum für Luft- und Raumfahrt e.V. Wärmeübertragungsvorrichtung und Verfahren zum Herstellen einer Wärmeübertragungsvorrichtung

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US3983283A (en) * 1974-03-18 1976-09-28 Corning Glass Works Honeycombed structures having open-ended cells formed by interconnected walls with longitudinally extending discontinuities

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DE2705123C2 (de) * 1976-02-24 1986-06-26 Corning Glass Works, Corning, N.Y. Wärmetauscher und Verfahren zur Herstellung eines Wärmetauschers
DE2706253A1 (de) * 1977-02-15 1978-08-17 Rosenthal Technik Ag Keramischer, rekuperativer gegenstromwaermetauscher

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US3825641A (en) * 1971-06-04 1974-07-23 L Barnett Method of forming multiple passageway plastic conduit
US3790654A (en) * 1971-11-09 1974-02-05 Corning Glass Works Extrusion method for forming thinwalled honeycomb structures
US3899326A (en) * 1973-03-30 1975-08-12 Corning Glass Works Method of making monolithic honeycombed structures
US3983283A (en) * 1974-03-18 1976-09-28 Corning Glass Works Honeycombed structures having open-ended cells formed by interconnected walls with longitudinally extending discontinuities

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601332A (en) * 1980-03-24 1986-07-22 Ngk Insulators, Ltd. Ceramic recuperative heat exchangers and a method for producing the same
US4421702A (en) * 1980-03-24 1983-12-20 Ngk Insulators Ltd. Ceramic recuperative heat exchangers and a method for producing the same
US4533584A (en) * 1983-04-05 1985-08-06 Ngk Insulators, Ltd. Multi-channel body
USRE33013E (en) * 1983-04-05 1989-08-08 Ngk Insulators, Ltd. Multi-channel body
US5373634A (en) * 1993-09-14 1994-12-20 Corning Incorporate Method of forming alternating-flow heat exchangers
US5416057A (en) * 1993-09-14 1995-05-16 Corning Incorporated Coated alternating-flow heat exchanges and method of making
DE19653989A1 (de) * 1996-12-21 1998-06-25 Degussa Reaktorkopf für einen monolithischen Gleich- oder Genstromreaktor
DE19653989C2 (de) * 1996-12-21 1998-11-26 Degussa Reaktorkopf für einen monolithischen Gleich- oder Genstromreaktor
US6534028B2 (en) 1996-12-21 2003-03-18 Degussa Ag Process for performing endothermic catalytic reactions
US20040261379A1 (en) * 2001-10-19 2004-12-30 Tor Bruun Method and equipment for feeding two gases into and out of a multi-channel monolithic structure
WO2003033985A1 (en) * 2001-10-19 2003-04-24 Norsk Hydro Asa Method and equipement for feeding two gases into and out of a multi-channel monolithic structure
US7285153B2 (en) 2001-10-19 2007-10-23 Norsk Hydro Asa Method and equipment for feeding two gases into and out of a multi-channel monolithic structure
US20060080968A1 (en) * 2002-08-30 2006-04-20 Alstom Technology Ltd Method and apparatus for the combustion of a fuel-oxidator mixture
US8122719B2 (en) 2002-08-30 2012-02-28 Alstom Technology Ltd Apparatus for the combustion of a fuel-oxidizer mix
US7421844B2 (en) 2002-08-30 2008-09-09 Alstom Technology Ltd Method for the combustion of a fuel-oxidizer mixture
US20090031697A1 (en) * 2002-08-30 2009-02-05 Alstom Technology Ltd Apparatus for the combustion of a fuel-oxidizer mix
CN100545570C (zh) * 2003-04-11 2009-09-30 诺尔斯海德公司 用于分布两种流体的方法和设备及其应用
US20060219397A1 (en) * 2003-04-11 2006-10-05 Tor Bruun Method and equipment for distribution of two fluids into and out of the channels in a multi-channel monolithic structure and use thereof
US8196647B2 (en) 2003-04-11 2012-06-12 Norsk Hydro Asa Method and equipment for distribution of two fluids into and out of the channels in a multi-channel monolithic structure and use thereof
WO2004090451A1 (en) * 2003-04-11 2004-10-21 Norsk Hydro Asa Method and equipment for distribution of two fluids into and out of the channels in a multi-channel monolithic structure and use thereof
EP2014883A2 (de) 2003-05-10 2009-01-14 Universität Stuttgart Verfahren und Vorrichtung zur Reinigung von Abgasen
US7797928B2 (en) 2003-05-10 2010-09-21 Univeritaet Stuttgart Method and apparatus for purifying exhaust gases
EP1479883A1 (de) * 2003-05-10 2004-11-24 Universität Stuttgart Verfahren und Vorrichtung zur Reinigung von Abgasen
EP2014883A3 (de) * 2003-05-10 2009-01-21 Universität Stuttgart Verfahren und Vorrichtung zur Reinigung von Abgasen
US20050056410A1 (en) * 2003-08-20 2005-03-17 Japan Atomic Energy Research Institute Compact heat exchanger made of ceramics having corrosion resistance at high temperature
US7168481B2 (en) * 2003-08-20 2007-01-30 Japan Atomic Energy Research Institute Compact heat exchanger made of ceramics having corrosion resistance at high temperature
US20090025919A1 (en) * 2003-08-20 2009-01-29 Japan Atomic Energy Research Institute Compact heat exchanger made of ceramics having corrosion resistance at high temperature
US7981168B2 (en) 2003-08-20 2011-07-19 Japan Atomic Energy Research Institute Compact heat exchanger made of ceramics having corrosion resistance at high temperature
US20070107888A1 (en) * 2003-08-20 2007-05-17 Japan Atomic Energy Research Institute Compact heat exchanger made of ceramics having corrosion resistance at high temperature
WO2005085737A1 (de) * 2004-03-05 2005-09-15 Behr Gmbh & Co. Kg Vorrichtung zum austausch von wärme und verfahren zur herstellung einer solchen vorrichtung
US8739520B2 (en) * 2004-10-07 2014-06-03 Behr Gmbh & Co. Kg Air-cooled exhaust gas heat exchanger, in particular exhaust gas cooler for motor vehicles
US20070261400A1 (en) * 2004-10-07 2007-11-15 Behr Gmbh & Co. Kg Air-Cooled Exhaust Gas Heat Exchanger, in Particular Exhaust Gas Cooler for Motor Vehicles
US20090238751A1 (en) * 2007-11-02 2009-09-24 University Of Connecticut Process Intensification In Microreactors
US8298499B2 (en) 2007-11-02 2012-10-30 University Of Connecticut Process intensification in microreactors
US20120048524A1 (en) * 2009-03-23 2012-03-01 Kyocera Corporation Ceramic heat exchanger and method of producing same
US9097473B2 (en) * 2009-03-23 2015-08-04 Ihi Corporation Ceramic heat exchanger and method of producing same
EP2510288A1 (en) * 2009-12-08 2012-10-17 NY Kraft Sverige AB Heat exchanger with guided air flows
EP2510288A4 (en) * 2009-12-08 2014-06-25 Ny Kraft Sverige Ab HEAT EXCHANGERS WITH GUIDED AIR FLOWS
US20190186851A1 (en) * 2010-09-22 2019-06-20 Raytheon Company Heat exchanger with a glass body
US20130264031A1 (en) * 2012-04-09 2013-10-10 James F. Plourde Heat exchanger with headering system and method for manufacturing same
US20180347431A1 (en) * 2017-06-02 2018-12-06 Toyota Jidosha Kabushiki Kaisha Heat exchanger and waste heat recovery structure
US10809007B2 (en) 2017-11-17 2020-10-20 General Electric Company Contoured wall heat exchanger
US20220049904A1 (en) * 2020-08-13 2022-02-17 General Electric Company Heat exchanger having curved fluid passages for a gas turbine engine
US11662150B2 (en) * 2020-08-13 2023-05-30 General Electric Company Heat exchanger having curved fluid passages for a gas turbine engine
US20230201513A1 (en) * 2021-12-27 2023-06-29 Blok Additive Manufacturing B.V. Heat and moisture exchanger

Also Published As

Publication number Publication date
BE878683A (fr) 1980-03-10
IT1121038B (it) 1986-03-26
GB2032609B (en) 1982-11-17
FR2436958A2 (fr) 1980-04-18
FR2436958B2 (ja) 1981-02-27
AU531203B2 (en) 1983-08-11
JPS55102891A (en) 1980-08-06
NL7907058A (nl) 1980-03-25
DE2937342A1 (de) 1980-04-10
IT7968849A0 (it) 1979-09-21
CA1118988A (fr) 1982-03-02
GB2032609A (en) 1980-05-08
SE7907802L (sv) 1980-03-23
AU5101379A (en) 1980-03-27

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